Retraction nNote to: J Mater Sci: Mater Electron (2013) 24:3189–3194 https://doi.org/10.1007/s10854-013-1226-y

The Editor in Chief has retracted this article as Fig. 5B has been published [1, 2] in articles on different materials. The Editor in Chief therefore no longer has confidence in the veracity of the results presented in this article.

M. M. Rashad has not responded to any correspondence from the editor about this retraction. A. E. Shalan does not agree to this retraction.